Liver rework (#31410)

* Remove old stuff

* Liver expansion

* Slimepeople don't take constant tox damage

* oops

* Makes this use the helper

* Oops

* Fixes

* Oops

* Capitalization

* Comment update

code/modules/mob/living/carbon/human/human_life.dm

@@ -14,6 +14,7 @@
 
 	if(.) //not dead
 		handle_kidneys()
+		check_for_missing_organs()
 
 		if(check_mutations)
 			domutcheck(src)
@@ -1016,3 +1017,14 @@
 			total_damage *= 0.05
 
 	adjustToxLoss(total_damage)
+
+/// A proc that checks for any missing organs and gives you damage for not having them
+/mob/living/carbon/human/proc/check_for_missing_organs()
+	if(NO_BLOOD in dna.species.species_traits)
+		return
+
+	// Currently only checks for a liver
+	// This has to be here since we can't check this in the on_life of organs
+	var/obj/item/organ/internal/liver = get_int_organ(/obj/item/organ/internal/liver)
+	if(!liver && !isslimeperson(src))
+		adjustToxLoss(2)

code/modules/mob/living/carbon/human/human_mob.dm

@@ -1152,6 +1152,12 @@
 		affected.custom_pain("You feel a stabbing pain in your chest!")
 		L.linked_organ.receive_damage(max(L.linked_organ.min_bruised_damage - L.linked_organ.damage, 2))
 
+/mob/living/carbon/human/proc/has_liver_cirrhosis()
+	var/obj/item/organ/internal/liver/liver = get_int_organ(/obj/item/organ/internal/liver)
+	if(!liver || liver.status & ORGAN_ROBOT)
+		return FALSE
+	return liver.get_wound(/datum/wound/cirrhosis)
+
 /mob/living/carbon/human/resist_restraints(attempt_breaking)
 	if(HAS_TRAIT(src, TRAIT_HULK))
 		say(pick(";RAAAAAAAARGH!", ";HNNNNNNNNNGGGGGGH!", ";GWAAAAAAAARRRHHH!", "NNNNNNNNGGGGGGGGHH!", ";AAAAAAARRRGH!" ))

code/modules/reagents/chemistry/reagents/medicine.dm

@@ -1651,6 +1651,10 @@
 					var/mob/living/carbon/human/H = M
 					for(var/obj/item/organ/internal/I in M.internal_organs) // 60 healing to all internal organs.
 						I.heal_internal_damage(4, TRUE)
+						if(istype(I, /obj/item/organ/internal/liver))
+							var/obj/item/organ/internal/liver/liver = I
+							liver.damaged_ticks = 0
+
 						if(istype(I, /obj/item/organ/internal/cyberimp)) // Fix disabled implants like the ipc charging implant
 							var/obj/item/organ/internal/cyberimp/crit = I
 							crit.crit_fail = FALSE

code/modules/research/designs/medical_designs.dm

@@ -829,6 +829,17 @@
 	build_path = /obj/item/organ/internal/liver/cybernetic
 	category = list("Medical")
 
+/datum/design/cybernetic_liver_u
+	name = "Upgraded Cybernetic Liver"
+	desc = "An upgraded cybernetic liver."
+	id = "cybernetic_liver_u"
+	req_tech = list("biotech" = 5, "materials" = 5, "engineering" = 5)
+	build_type = PROTOLATHE | MECHFAB
+	materials = list(MAT_METAL = 500, MAT_GLASS = 500, MAT_SILVER = 500)
+	construction_time = 60
+	build_path = /obj/item/organ/internal/liver/cybernetic/upgraded
+	category = list("Medical")
+
 /datum/design/cybernetic_kidneys
 	name = "Cybernetic Kidneys"
 	desc = "A cybernetic pair of kidneys."

code/modules/surgery/organs/liver.dm

@@ -4,51 +4,66 @@
 	organ_tag = "liver"
 	parent_organ = "groin"
 	slot = "liver"
+	/// How hard does alcohol hit? This is a multiplier, so 2 would be twice as strong
 	var/alcohol_intensity = 1
+	/// Amount of ticks that we have been at a damaged state. Never goes down.
+	var/damaged_ticks = 0
+	/// Heal multiplier
+	var/heal_multiplier = 1
+	/// Is this liver immune to high toxin damage?
+	var/tox_damage_immune = FALSE
+
+/obj/item/organ/internal/liver/rejuvenate()
+	. = ..()
+	damaged_ticks = 0
+
+#define THRESHOLD_FAINT 180 SECONDS
 
 /obj/item/organ/internal/liver/on_life()
-	if(germ_level > INFECTION_LEVEL_ONE)
-		if(prob(1))
-			to_chat(owner, SPAN_WARNING("Your skin itches."))
-	if(germ_level > INFECTION_LEVEL_TWO)
-		if(prob(1))
-			owner.vomit()
+	if(!owner)
+		return
+	if(status & ORGAN_DEAD)
+		owner.adjustToxLoss(2)
+		// Dead liver? That's not good
+		return
 
-	if(owner.life_tick % PROCESS_ACCURACY == 0)
+	var/datum/wound/cirrhosis = get_wound(/datum/wound/cirrhosis)
+	if(cirrhosis)
+		// Not as bad as having a dead liver but you're close
+		cirrhosis.do_effect()
+		return
 
-		//High toxins levels are dangerous
-		if(owner.getToxLoss() >= 60 && !owner.reagents.has_reagent("charcoal"))
-			//Healthy liver suffers on its own
-			if(damage < min_broken_damage)
-				receive_damage(0.2 * PROCESS_ACCURACY)
-			//Damaged one shares the fun
-			else
-				var/obj/item/organ/internal/O = pick(owner.internal_organs)
-				if(O)
-					O.receive_damage(0.2  * PROCESS_ACCURACY)
+	if(!is_robotic() &&  damage >= (max_damage / 2))
+		damaged_ticks++
 
-		//Detox can heal small amounts of damage
-		if(damage && damage < min_bruised_damage && owner.reagents.has_reagent("charcoal"))
-			receive_damage(-0.2 * PROCESS_ACCURACY)
+	// Cirrhosis happens when you run around for more than 3 minutes with a very damaged liver
+	if(!is_robotic() && damaged_ticks >= 100 && !get_wound(/datum/wound/cirrhosis))
+		add_wound(/datum/wound/cirrhosis)
 
-		// Get the effectiveness of the liver.
-		var/filter_effect = 3
-		if(is_bruised())
-			filter_effect -= 1
-		if(is_broken())
-			filter_effect -= 2
+	var/toxloss = owner.getToxLoss()
+	switch(toxloss)
+		if(0)
+			var/datum/status_effect/transient/drunkenness/drunk = owner.has_status_effect(STATUS_EFFECT_DRUNKENNESS)
+			if(drunk?.cached_strength >= THRESHOLD_FAINT)
+				return
 
-		// Damaged liver means some chemicals are very dangerous
-		if(damage >= min_bruised_damage)
-			for(var/datum/reagent/R in owner.reagents.reagent_list)
-				// Ethanol and all drinks are bad
-				if(istype(R, /datum/reagent/consumable/ethanol))
-					owner.adjustToxLoss(0.1 * PROCESS_ACCURACY)
+			if(damage < min_bruised_damage)
+				// 0.1 damage healing per second
+				heal_internal_damage(0.2)
 
-			// Can't cope with toxins at all
-			for(var/toxin in GLOB.liver_toxins)
-				if(owner.reagents.has_reagent(toxin))
-					owner.adjustToxLoss(0.3 * PROCESS_ACCURACY)
+		if(0 to 40)
+			// Very minor healing
+			owner.adjustToxLoss(-0.2 * heal_multiplier)
+		if(40 to 80)
+			// Still low healing, but slightly higher
+			owner.adjustToxLoss(-0.4 * heal_multiplier)
+		if(80 to INFINITY)
+			// The liver is overwhelmed, less healing and also liver damage
+			owner.adjustToxLoss(-0.2 * heal_multiplier)
+			if(!tox_damage_immune)
+				receive_damage(0.4)
+
+#undef THRESHOLD_FAINT
 
 /obj/item/organ/internal/liver/cybernetic
 	name = "cybernetic liver"
@@ -57,3 +72,13 @@
 	origin_tech = "biotech=4"
 	materials = list(MAT_METAL = 500, MAT_GLASS = 500)
 	status = ORGAN_ROBOT
+	alcohol_intensity = 0.5
+
+/obj/item/organ/internal/liver/cybernetic/upgraded
+	name = "upgraded cybernetic liver"
+	icon_state = "liver-c-u"
+	desc = "An electronic device designed to mimic the functions of a human liver. It works better than a normal liver."
+	origin_tech = "biotech=5"
+	alcohol_intensity = 0.25
+	heal_multiplier = 2
+	tox_damage_immune = TRUE

code/modules/surgery/organs/lungs.dm

@@ -11,7 +11,7 @@
 /obj/item/organ/internal/lungs/receive_damage(amount, silent)
 	..()
 	if(damage >= min_bruised_damage && amount > 1 && !get_wound(/datum/wound/ruptured_lungs))
-		wound_list += new /datum/wound/ruptured_lungs(src)
+		add_wound(/datum/wound/ruptured_lungs)
 
 /obj/item/organ/internal/lungs/heal_internal_damage(amount, robo_repair)
 	..()

code/modules/surgery/organs/organ.dm

@@ -344,6 +344,11 @@ I use this so that this can be made better once the organ overhaul rolls out --
 		to_chat(owner, msg)
 		next_pain_time = world.time + 10 SECONDS
 
+/// Wound datum adding helper. Returns the wound datum
+/obj/item/organ/proc/add_wound(wound_path)
+	// Passing the organ with the arg puts it on the wound list automatically
+	return new wound_path(src)
+
 /// Finds a wound datum. `wound_to_find` should be a typepath, and if `exact` is FALSE, it will grab subtypes aswell.
 /obj/item/organ/proc/get_wound(wound_to_find, exact = FALSE)
 	if(!wound_to_find)

code/modules/surgery/organs/organ_external.dm

@@ -812,11 +812,10 @@ Note that amputating the affected organ does in fact remove the infection from t
 		release_restraints()
 
 /obj/item/organ/external/proc/create_fracture_wound(fracture_name_override)
-	var/picked_type = pick(typesof(/datum/wound/fracture))
-	var/datum/wound/fracture = new picked_type(src)
+	var/datum/wound/fracture = add_wound(pick(typesof(/datum/wound/fracture)))
+
 	if(fracture_name_override)
 		fracture.name = fracture_name_override
-	wound_list += fracture
 
 /obj/item/organ/external/proc/mend_fracture()
 	if(is_robotic())

code/modules/surgery/organs/wounds.dm

@@ -12,6 +12,7 @@
 		INVOKE_ASYNC(src, GLOBAL_PROC_REF(qdel), src)
 		return
 	parent = _parent
+	parent.wound_list += src
 	RegisterSignal(parent, COMSIG_PARENT_QDELETING, PROC_REF(remove_and_destroy))
 
 /datum/wound/Destroy(force, ...)
@@ -36,21 +37,21 @@
 
 // MARK: Fractures
 /datum/wound/fracture
-	name = "hairline fracture"
+	name = "Hairline fracture"
 
 // One day these will be more than just renamed variants
 /datum/wound/fracture/spiral
-	name = "spiral fracture"
+	name = "Spiral fracture"
 
 /datum/wound/fracture/transverse
-	name = "transverse fracture"
+	name = "Transverse fracture"
 
 /datum/wound/facture/linear
-	name = "linear fracture"
+	name = "Linear fracture"
 
 // MARK: Ruptured lungs
 /datum/wound/ruptured_lungs
-	name = "ruptured lungs"
+	name = "Ruptured lungs"
 
 /datum/wound/ruptured_lungs/do_effect()
 	if(prob(2) && !(NO_BLOOD in parent.owner.dna.species.species_traits))
@@ -59,3 +60,27 @@
 	if(prob(4))
 		parent.owner.custom_emote(EMOTE_VISIBLE, "gasps for air!")
 		parent.owner.AdjustLoseBreath(10 SECONDS)
+
+// MARK: Cirrhosis
+/datum/wound/cirrhosis
+	name = "Cirrhosis"
+	/// Cirrhosis has two "gamefied" stages, mild and severe
+	var/stage = CIRRHOSIS_MILD
+
+/datum/wound/cirrhosis/do_effect()
+	switch(stage)
+		if(CIRRHOSIS_MILD)
+			parent.max_damage = 40
+			parent.owner.adjustToxLoss(0.5)
+			if(parent.damage >= 20 && prob(5))
+				stage = CIRRHOSIS_SEVERE
+
+		if(CIRRHOSIS_SEVERE)
+			parent.max_damage = 20
+			parent.owner.adjustToxLoss(1)
+			// You're on a slow clock. 400 seconds until death
+			parent.receive_damage(0.1)
+
+/datum/wound/cirrhosis/cure_wound()
+	. = ..()
+	parent.max_damage = initial(parent.max_damage)